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Johann Chang mrjohannchang

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@mrjohannchang
mrjohannchang / autossh.service
Created August 2, 2024 03:36 — forked from thomasfr/autossh.service
Systemd service for autossh
[Unit]
Description=Keeps a tunnel to 'remote.example.com' open
After=network.target
[Service]
User=autossh
# -p [PORT]
# -l [user]
# -M 0 --> no monitoring
# -N Just open the connection and do nothing (not interactive)
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mrjohannchang / arduino-cli-steps.md
Created July 31, 2024 20:06 — forked from Jerrylum/arduino-cli-steps.md
How to use Arduino CLI to program ESP32

Development

Suggested user settings, Arduino CLI is optional.

{
    "arduino.path": "C:\\Users\\jerrylum\\Documents\\Application\\arduino-cli_0.27.1_Windows_64bit",
    "arduino.useArduinoCli": true,
    "arduino.commandPath": "arduino-cli.exe"
}
@mrjohannchang
mrjohannchang / keepawake.ps1
Last active March 13, 2023 00:05 — forked from jamesfreeman959/keepawake.ps1
A very simple PowerShell script to keep a Windows PC awake and make lync think the user is active on the keyboard
# Useful references:
#
# https://superuser.com/questions/992511/emulate-a-keyboard-button-via-the-command-line
# https://ss64.com/vb/sendkeys.html
# https://social.technet.microsoft.com/Forums/windowsserver/en-US/96b339e2-e9da-4802-a66d-be619aeb21ac/execute-function-one-time-in-every-10-mins-in-windows-powershell?forum=winserverpowershell
# https://learn-powershell.net/2013/02/08/powershell-and-events-object-events/
#
# Future enhancements - use events rather than an infinite loop
$wsh = New-Object -ComObject WScript.Shell
while ($true) {
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mrjohannchang / swap-caps-lock-and-left-control.reg
Created October 4, 2021 08:18
Swap left control and caps lock on Windows
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=hex:00,00,00,00,00,00,00,00,03,00,00,00,1d,00,3a,00,3a,00,1d,00,00,00,00,00
; Refs:
; https://superuser.com/a/1381836
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mrjohannchang / remap-mac-keyboard-modifier-keys-on-windows.reg
Last active July 7, 2021 15:26
Swap left command and left option keys, remap right command to right alt, remap right option to context menu on Windows
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=hex:00,00,00,00,00,00,00,00,05,00,00,00,5b,e0,38,00,38,00,5b,e0,38,e0,5c,e0,5d,e0,38,e0,00,00,00,00
; Refs:
; https://superuser.com/a/1202601/270174
; https://stackoverflow.com/questions/40777182/how-to-remap-the-menu-key-on-windows
@mrjohannchang
mrjohannchang / multiprocessing-queue-manager-client.py
Last active July 20, 2021 16:40
Python multiprocessing server client inter-process communication (IPC) over Queue. https://stackoverflow.com/a/62608473/1592410
import multiprocessing
import multiprocessing.managers
import os
import sys
from typing import AnyStr, Union
class QueueManager(multiprocessing.managers.BaseManager):
def get_queue(self, ident: Union[AnyStr, int, type(None)] = None) -> multiprocessing.Queue:
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mrjohannchang / fib.go
Last active September 10, 2019 14:35
[Interview] Please modify the program, so the Fibonacci sequence starts from 0 instead of 1.
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
import "fmt"
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mrjohannchang / print-asterisk-triangle.py
Last active August 26, 2019 08:29
Print an asterisk triangle without for-loops
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import argparse
import logging
import os
import sys
def parse_args() -> argparse.Namespace:
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mrjohannchang / google-1.py
Last active May 29, 2017 02:01
https://www.ptt.cc/bbs/Soft_Job/M.1495786228.A.BE0.html
def solve(s: str, n: int, iseven: bool):
if n <= 0:
print(s)
return
i: int
for i in range(10) if iseven else range(9, -1, -1):
solve(s + chr(ord('0') + i), n - 1, i % 2 == 0 if iseven else i % 2 == 1)
solve('', int(input()), True)
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mrjohannchang / log.txt
Created May 31, 2016 23:44
Boot log
U-Boot 1.1.3 (Nov 15 2013 - 16:45:31)
Board: Ralink APSoC DRAM: 64 MB
relocate_code Pointer at: 83fb4000
enable ephy clock...done. rf reg 29 = 5
SSC disabled.
******************************
Software System Reset Occurred
******************************
spi_wait_nsec: 29